@charset "utf-8";

#content {
    width: 95%;
    height: 600px;
    max-width: 1450px;
    min-width: 1100px;
    margin: 20px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}


#content .fir-menu-list {
    width: 18%;
    height: 100%;
}
#content .fir-menu-list .item {
    width: 100%;
    border-bottom: 1px solid #f5f5f5;
    position: relative;
    overflow: hidden;
    box-sizing: border-box;
    padding-left: 20px;
    line-height: 50px;
    cursor: pointer;
}
#content .fir-menu-list .item:before {
    content: "";
    display: block;
    width: 5px;
    height: 5px;
    border-top: 2px solid #333333;
    border-right: 2px solid #333333;
    
    position: absolute;
    left: 0;
    top: 22.5px;
    transform:rotateZ(45deg);
}

#content .sec-menu-list {
    box-sizing: border-box;
    padding-left: 20px;
    height: 0;
    overflow: hidden;
}
#content .sec-menu-list.show {
    height: auto;
}

#content .goods-list {
    width: 78%;
    height: 100%;
    background: blue;
}